Re: [MW:10849] Multi and Single Pass fillets-ASME Sec IX

Hi

 

It is because of the reason that, in multipass weld will be tempered and refined by subsequent passes but in case of Single pass will not be.

 

That is the reason , multipass to single pass is considered as SEV, but not vice versa.

 

Thanks & Regards,

 

K. Babu

----- Original Message -----

From: Vikas Bhandari

To: materials-welding@googlegroups.com

Sent: Tuesday, April 26, 2011 12:26 AM

Subject: [MW:10848] Multi and Single Pass fillets-ASME Sec IX

Dear All

According to ASME sec IX, for GTAW, FCAW and GMAW in supplementary essential variables (QW 410.9) , a multi pass per side fillet/butt weld procedure cannot be used to weld single pass per side. (say single pass per side fillet weld.)

I am curious to know the technical reason behind the same. In my opinion, fill pass parameters of a butt weld procedure can be used for welding single pass fillet welds. Please advice if this is incorrect and kindly provide technical/ metallurgical reasoning for the same.

Thanks & best regards

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